Re: How to make your Marketo from expandable?
This is a great technique to lower the barrier to action and hopefully increase form submissions.
Marketo offers similar functionality but falls just short of your goal with Dynamic Visibility Rules.
Dynamic visibility rules require the person to enter something first whereas your goal is to show additional fields/rows on-click. For marketers who are happy showing additional fields a little later: after a person enters a value in the first field, Dynamic Visibility Rules are a simpler solution.